Extractor beating engine



I March 9 1926. 1 F. B. DILTS EXTRACTOR BEATING ENGINE Filed May 2, 1924 2 Sheets $heet 1 March 9 1926. 1,576,101

F. B. DILTS EXTRACTOR BEAT I NG ENGI NE Filed May 2, 1924 2 Sheets-Sheet 2 Zlxwentoz flaw/f2 2/73,

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Patented Mar. 9, 1926.

UNITED STATES FRANK B. DILTS, OF FULTON,

- OI FULTON,

NEW YORK, ASSIGNOR TO DILTS MACHINE WORKS/ENG,

NEW YORK.

nx'rnao'ron BEA'IING Enema.

Application filed ma 2,.

To all whom it may concern:

Be it known that I, FRANK B. Dnrrs, citizen of the United States, residing at Fulton, in the county of Oswego and State of, New York, have invented certain new and useful Improvements in Extractor Bea-ting Engines, of which the following is a specification.

This invention relates to extractor beating engines; More particularly, it belongs with that class or type of apparatus for disintegrating fibrous material for paper making, by means of a beating roll and bed plate 1n an elongated tub with rounded or semicylindrical end walls, in which the materials, fluent with water, are kept in circulation, usually by the roll, and in connection with which various contrivances are associated for the purpose of screening out the filamentous portions as they become sufficiently beaten, leaving the coarser pieces for further beating action. Thus, the operation of the beating engine and the removal of the finished stock are made continuous.

It is the object of this invention to produce an extractor beating engine having parts of special construction and arrange ment, whereby it is thought the cost of building the apparatus originally is materially reduced, and the practical operation thereof rendered more continuously uniform, while the separation of the finished stock is effected more completely and in better quality. than results from the regular service use of like machines with which this applicant is acquainted.

To illustrate the preferred special construction and arrangement of the elements combined to erect this invention, the accompanying drawings are provided and made a part of this application. Fig. 1 represents a section lengthwise through one rounded end of a beating engine made in accordance with this invention. Fig. 2 is a top plan View of the parts all assembled as set forth in Fig. 1. Fig. 3 is a fragmentary vertical section of the bed or bottom of-the tub on the broken line 3-3 of Fig. 2, to show the abrupt drop in the bed between the backfall and the screen as hereinafter explained. Fig. 4 is a top plan view of the rounded end of a beating engine tub, exhibiting a modification of this invention, all parts being assembled.

Throughout the specification and draw- 1924. Serial No. 710,588.

the moving contents of the tub are received in a space in the tub which is provided with a cover D, and it will be noted that the cover has one edge extended in proximity to the roll C and projecting slightly downward to constitute a doctor blade at, by which the material is directed from the roll intothe space in the tub under the cover D. The

cover D has the pivot or hin e E, usually supported upon the cover a of not necessarily so supported. Spaced from the backfall and arranged in the path of the moving material under the cover D is the screen F, and just behind the screen is the extracted stock chamber f formed at the end of the tub, and the finished fibres are received in the chamber 7. From the chamber the finished stock passes into the end box G, by Way of the conduit 9, and the box may fill until the material overflows the adjustable partition H and is discharged by way of the conduit 71. to a pump or stuff chest not shown. The partition H may be varied in height to correspondingly vary the depth of the water and fine fibre in the box, in the usual manner.

Between the backfall and'the screen F the bottom of the tub has a portion J somewhat depressed and curving, and at the side the bottom portion J has an abrupt drop 7' down which that part of the moving material which passes by the screen falls and its movement is accelerated. This construction keeps the bottom portion J between the backfall and the screen clear of material.

With respect to the screen F, it is usually curved and arranged in an inclined position extending upwardly from the bottom of the tub, but the curvature or inclination of the screen as illustrated, or the exact position of the sameis not intended to limit this in- 105 vent-ion. In practice the screen is in effect the end wall of the path and deflects or turns the course of the moving material towards the other side of the tub.

In the modification shown in Fig. 4, the 110 through the of material and tub K, roll Z1, and backfall L are the same as before. The depressed bottom portion M between the backfall and the screen m is substantially as previously described, and the abrupt drop N at the edge of the bottom portion M is the same as in the first form, and accelerates the movement of the material downwardly to the bottom a of the tub. The screen m is substantially a flat, inclined perforated plate, and meeting it is a curved wall plate 0 against which is formed a curving and downwardly extending bank P for the guidance of that part of the moving material which passes by the screen. The space marked Q, in Fig. 4 is the extracted stock chamber, and in this modification the rounded external end wall of the tub is cut away and the end box R arranged in connection with the opening thus made. The box is provided with the adjustable partition, and the overflow of water and finished fibre is discharged by way of the conduit S. The partition is marked 1'.

The operation of the preferred form illustrated in Figs. 1, 2 and 3, and the modification shown in Fig. 4, is the roll circulates the material, and drives it over the back fall, its entrance into the space between the backfall and screen being directed by the doctor blade d mentioned. As the material is moving with great velocity it rises upon the screen which is in its path, and such portions as are suificiently beaten are in a very large measure forced through the screen into the chamber on the other side of it. The course of the moving, material, so far as relates to that portion not fine enough to pass screen, is turned by the screen towards the return side of the tub as will be understood.

Having now described. this invention and explained the mode of its operation, what I claim is 1. In a beating engine, the combination with tub having a rounded end, of a beater roll at one side of the tub to disintegrate and circulate the material in the tub, a backfall located adjacent to the roll, the'rounded end of the tub receiving material directly from the baokfall and including a screen constructed to turn the direction of the flow permitting the .passage of sufiiciently beaten material, the bottom of the tub adjacent to the said screen having an abrupt drop to accelerate the movement of the material passing by the screen, and means for receiving and discharging material after it has passed through the said screen.

2. In a beating engine, the combination with a tub having a rounded end, of a beater roll adjacent to the said end for disintegrating and circulating the material in the tub, a portion of the wall of said rounded end of the tub comprising a screen arranged in the path of the moving material and constructed to turn the direction of the flow thereof, a pivoted doctor member arranged to remove material from the roll and to direct the same towards the said screen, and means for receiving and discharging material after it has passed through the said screen;

3. In a beating engine, the combination with a tub having a rounded end, of a heater roll adjacent to the said end for disintegrat: ing and circulating the material in the tub, a portion of the wall of the said rounded end of the tub comprising a screen constructed to turn the direction of the flow of the material and permitting the passage of sufficiently beaten material, said tub having a chamber formed, in front ofthe said screen to receive the moving material from the roll, a movable cover for the said chamber, the edge portion of the said cover being extended to form a doctor blade arranged to direct material from the roll into the said chamber, and means for receiving and discharging the material after it has passed through the screen.

4. In a beating engine, the combination with a back-fall, of a screen inclined up- ,wardly and rearwardly from the rear end of the back-fall.

5. In a beating en ine, the combination with a tub, of means or disintegrating and circulating the material in the tub horizontally, a screen arran ed in the path of the moving material wdereby the horizontal course'of the material is deflected towards the other side of the tub, the bottom of the tub next in front of the said screen having an abrupt drop to accelerate the movement of material passing by the screen, and means for receiving and discharging material after it'has passed through the screen.

6. In a beating engine, the combination with a tub having a rounded end, of a heater roll at' one side of the tub todisintegrate and circulate the material in the tub, a screen extending from'the bottom of the tub upwardly in the tub and spaced from the external wall of the said end of'the tub to form a chamber for extracted stock, the said screen eing arranged in the path ,of the material moving from the roll and inclined to the said movement whereby the course of the material is turned and sufficiently beaten ma and rearwardly from one side toward the opposite side of the back-fall.

8; In a beating engine, a back-fall having a laterally inclined bottom portion between its ends, in combination with a screen extending upwardly from the rear end of the back-fall at the rear of said laterally inclined bottom portion. 9. In a beating engine, the combination with a tub, of a beater roll arranged at one s'ideof the tub to disintegrate and circulate the material in the tub, a backfall formed 1 adjacent to the said roll, the said tub having formed therein an extracted stock chamber spaced from the said backfall in the path of the moving material, the wall of the said chamber externally in contact with the moving material being a screen extending upwardly from the bottom of the tub and arranged to turn the course of the material towards the other side of the tub, the space in the tubbetween the said backfall and the screen having a movable cover at said space, and outlet devices for discharging the said chamber.

10. In a beating engine, a heater roll, a back-fall, a screen extending upwardly and rearwardly from the rear end of the backfall, and a chamber at the rear of the screen for receiving the screened stock.

11. In a beating engine, a back-fall having a longitudinally depressed and laterally inclined bottom portion between its ends, a screen rising from the back-fall at the rear of said inclined portion, and a stock-receiving chamber at the rear of the screen.

In testimony whereof I afiix my signature.

FRANK B. DILTS. 

